Invalid-chair



v (Model.)

M. J. KOENIG.

INVALID GHAIR.

- No. 276,429. @mq-md Apr-.24,1883

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WITNSSES: INVENTOR:

ATTORNEYS.

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UNITED STATES PATENT OFFICE.

MAXIMILIAN J. KOENIG, OFJERSEY SHORE, PENNSYLVANIA.

INVALlD-CHAIR.

SPECIFICATION forming part of Letters Patent No. 276,429, dated April 24, 1883.

Y Application filed September 12, 1882. (Model.)

To all 'whom it may concern:

Be it known that I, MAXIMILIAN JOSEPH KOENIG, of Jersey Shore, in the county ofLycoming and State ot' Pennsylvania, have invented a new and Improved Invalid-Chair, of which the following is a full, clear, and exact description.

The object of my invention is to provide new and improved attachments for chairs, which, when attached to a ehair,c0nvert the same into an invalid-chair which can easily be moved about.

The invention consists in the combination, with an ordinary chair, of detachable wheels, whereby the chair can easily be converted into an invalid-chair.

The invention further consists in journalboxes attached to the under side of the chair, Iand in wheels provided with axle.- sections which pass through the journal-boxes and into the ends ofa removablejournal-box held under the seat.

The invention further consistsin a rear wheel journaled in a removable vertical shaft.

The invention also consists in the combination, with the axle-sections and shaft, of ad justable collars for holding the wheels in place.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the iigures.

Figure 1 is a partly sectional side elevation of a rocking-chair provided with my improved attachments on the line x Fig. 2. Fig. 2 is a front elevation ofthe same, parts being broken away and others shown in section. Fig. 3 is a plan view of the slotted coupling-bar.

J ournal-boxesA are attached to the bottom of a chair, B, near the front, and at the sides wheels C are provided ,l with fixed axle-sections l),which are passed through the journal-boxes A, and into the opposite ends of a tubularjournal-box, E, held transversely under the chairseat, at the end of a longitudinal bar, F, attached to a downwardly-projecting bracketframe, G, attached to the bottom ot' the chairseat at the rear end of the same. The front end of the bar F is slotted longitudinally, and a thumb-screw, (lr/,passes through the slot into a projection, E', ofthe tubular journal-box E. By this-construction thebarF and the projection E of the tubular bearing E are adj ustably secured together,thereby permitting the wheels C and caster-wheel H to be coupled closer together or farther apart to suit different sizes of chairs.

A Wheel, H,is journaled on the lower forked end, H', of a vertical shaft, J, which is swiveled or held to turn on its longitudinal axis in bearings at the rearl end of the bar F. By means of a collar, K, provided with a bindingscrew,K, the shaft J can be so adjusted that the rear end of the bar F will be a greater or less distance from the lower end of the said shaft. CollarsL, provided with binding-screws L', are loosely mounted on the axle-sections D. The axle-sections are passed through the journal-boxes A and in to the ends of the journalbox E, and are held in place by the collars L, one of which is placed against each side of a journal-box A, and is held in place by its screw L. The wheels O must be ot' suoli diameter that when the `same are attached to the chair B the rockers M of the same will be raised from the door, as shown. The shaft J can be so adjusted that the chair can be inclined backward more or less, as may be desired.

from anywchair of anyV width, andthus a rocking-chair of any kind can easily be converted into an invalid-chair in a very short time, and it' it is to be used as a rocking-chair again the wheels can be removed just as rapidly.

The wheels, journal-boxes, Src., can be litted to a chair of any width. The bar F and the journal-boxes A aretthe only parts that must be screwed, pivoted, or otherwise fixed to a chair. An invalid-chair can thus be made out of an ordinary chair at a very-'small expense.

I am aware that axle-sections revolving with the wheels have heretofore been employed; and I am also aware that axle-sections have been secured in a sleeve by means of screws passing through said sleeve and working in grooves of said axle-sections; and I am further aware that the shank of a collar has been secured in a socket-clamp bya collar and set-screw on said shank, and I therefore do not claim such iuventions. n

Having thus fully described my invention, I claim as new and desire to secure by Letters .Patent- 1. ln an attachment for chairs, the combination, with thejournal-boxes A and the wheels The wheels .U andH can easily be attached to and removed IDO 2 anche@ C, each provided with a fixed axle-section, D, of the tubular journal-box E, for receiving the ends of the axle-sections, substantially as herein shown and described.

2. In an attachment for chairs, the combination, with the journal-boxes A and the wheels C, provided with fixed ax1e-sections D, of the adj ustable collarsL and the tubular journal-box E, substantially as herein shown and described, whereby the wheels can be adjusted to or from each other, as and for the purpose set forth.

3. In au attachment for chairs, the combination, with the journal-boxes A and the wheels C, provided with xed axle-sections D, of the collars L, adj ustably secured to the axle-sections on each side of thejournai-boxes, the tubular journal-box E, the bar F, adjustably secured to the tubular bearing E, the bracketframe G, and the caster-wheel H J, substau.

tiaily as herein shown and described, whereby 2o the attachment can be attached to chairs of different sizes, as set. forth.

4. In an attachment for chairs, the combination, with the axle-box A, the tubular bearing E, provided with the extension E', and the z 5 wheels G, provided with axle-sections, D adjustably secured in said bearings, of the slotted bar F, the thumb-screw G', the bracketframe G, and the caster-whee1 H J, substantially as herein shown and described, whereby 3o the wheels can be adjusted to or from each other, and the said wheels and caster-wheel coupled closer together or farther apart, as and for the purpose set forth.

MAXIMILIAN JOSEPH KOENIG. Witnesses:

JAMES E. Nien, D. W. JUNoD. 

